(a) Interpretation: The diameter of nickel wire is 0.15 in and the yield and tensile strength is 45,000 psi and 55,000 psi respectively. A force of 850-lb is applied on this wire. In this case, the plastic deformation of wire is to be determined. Concept Introduction: In this concept of the engineering, stress will be used. The formula of engineering stress is given as- S = F A

Question

Consider a piece of steel undergoing a decarburization process at 925 degrees C. the mass diffusivity of carbon in steel at 925 degrees C is 1*10^-7 cm^2/s. Determine the depth below the surface of the steel at which the concentration of carbon is reduced to 40 percent from its initial value as a result of the decarburization process for (a) an hour and (b) 10 hours. Assume the concnetration of carbon at the surface is zero throughout the decarburization process.

Answer 1

Question

Chapter 6, Problem 6.18P

Interpretation Introduction

(a)

Interpretation:

The diameter of nickel wire is 0.15 in and the yield and tensile strength is 45,000 psi and 55,000 psi respectively. A force of 850-lb is applied on this wire. In this case, the plastic deformation of wire is to be determined.

Concept Introduction:

In this concept of the engineering, stress will be used. The formula of engineering stress is given as-

S=FA

Interpretation Introduction

(b)

Interpretation:

The diameter of nickel wire is 0.15 in and the yield and tensile strength is 45,000 psi and 55,000 psi respectively. A force of 850-lb is applied on this wire. In this case, the experience of necking by the wire is to be determined.

Concept Introduction:

In this concept of the engineering, stress will be used. The formula of engineering stress is given as-

S=FA

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Consider a piece of steel undergoing a decarburization process at 925 degrees C. the mass diffusivity of carbon in steel at 925 degrees C is 1*10^-7 cm^2/s. Determine the depth below the surface of the steel at which the concentration of carbon is reduced to 40 percent from its initial value as a result of the decarburization process for (a) an hour and (b) 10 hours. Assume the concnetration of carbon at the surface is zero throughout the decarburization process.

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